Probability of Failing Servers: each of 25 servers fails average of once per month

Swirve

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Joined
Oct 13, 2018
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1
Does anyone have a solution for this?

There are 25 servers running and each one fails an average of once per month.

i. What is the probability that 2 servers will fail in the following time period:
a. Same day
b. Once a week
c. Once in 6 months
d. In the same 30 min period.

ii. What is the formula for this event (2 servers failing) in X years?

Thanks in advance!
 
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